Fast hopping OFDM and packet-awareness coder design for wireless multimedia delivery

نویسنده

  • Jie Chen
چکیده

In this paper, the FH-OFDM (fast hopping OFDM) design and its associated packet-awareness channel coder are presented for wireless multimedia. In addition, the effectiveness of the coder over Markov channel model is studied. The simulations show that these proposed techniques can achieve significant performance gains.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Joint cross-layer design for wireless QoS video delivery

In this paper, we propose “cross layer” design, such as swift-OFDM, low-latency packet-awareness coder and adaptive noise filtering design for wireless multimedia delivery. Unlike the conventional error correction code, we take the bursty nature of wireless Internet into our coder design consideration. Furthermore, we adaptively filter out noise based on image content so that we can reduce nois...

متن کامل

A Fuzzy Based Approach for Rate Control in Wireless Multimedia Sensor Networks

Wireless Multimedia Sensor Networks (WMSNs) undergo congestion when a link (or a node) becomes overpopulated in terms of incoming packets. In WMSNs this happens especially in upstream nodes where all incoming packets meet and directed to the sink node. Congestion in networks, if not handled properly, might lead to congestion collapse which deteriorates the quality of service (QoS). Therefore, i...

متن کامل

Enhancing Quality of Service using OFDM Technique for Next Generation Network

The migration to 4G networks will bring a new level of expectation to wireless communications. As after digital wireless revolution made mobile phones available for everyone, the higher speeds and packet delivery of 4G networks will make high quality multimedia available everywhere. The key to achieving this higher level of service delivery is a new air interface. Orthogonal Frequency Division ...

متن کامل

ICI Self – Cancellation for FFT-OFDM System

Orthogonal frequency division multiplexing (OFDM) is the projected modulation of choice for fourth-generation broadband multimedia wireless systems. OFDM based wireless systems are spectrally efficient but they are vulnerable to Inter carrier interference (ICI). The rapid variation of the channel can induce ICI. ICI will significantly increase the difficulty of OFDM channel estimation. ICI due ...

متن کامل

Comparative Study of Digital Modulation Techniques in WIMAX

The migration to 4G networks will bring a new level of expectation to wireless communications. As after digital wireless revolution made mobile phones available for everyone, the higher speeds and packet delivery of 4G networks will make high quality multimedia available everywhere. The key to achieving this higher level of service delivery is a new air interface. Orthogonal Frequency Division ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2003